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I need to solve an equation of complex numbers, couldn't do it so I watched a video and couldn't understand how he got from this, Z is a complex number: $$(Z-1)^2-(\overline Z-1)^2$$ to this : $$(Z-1+\overline Z -1)(Z-1-\overline Z+1)$$
It'll be really helpful if you can point me on how he did this, thank you.
Use the identity $a^2-b^2=(a+b)(a-b)$.